From 7481f91f1d7e8a004f19b55747d38a934119abe2 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 27 Jul 2021 13:45:12 +0300 Subject: phy: phy-twl4030-usb: Disable PHY for suspend Since commit 88d26136a256 ("PM: Prevent runtime suspend during system resume"), PM runtime will not let devices idle during system suspend. This is because of the pm_runtime_get_noresume() call done in device_prepare() that is not released until at device_complete() after resume. We must now disable the USB PHY in suspend if no USB cable is connected. Cc: Andreas Kemnade Signed-off-by: Tony Lindgren Link: https://lore.kernel.org/r/20210727104512.52968-1-tony@atomide.com Signed-off-by: Vinod Koul --- drivers/phy/ti/phy-twl4030-usb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/phy/ti') diff --git a/drivers/phy/ti/phy-twl4030-usb.c b/drivers/phy/ti/phy-twl4030-usb.c index 5771e2486a3b..ac71017a0bc1 100644 --- a/drivers/phy/ti/phy-twl4030-usb.c +++ b/drivers/phy/ti/phy-twl4030-usb.c @@ -162,6 +162,8 @@ struct twl4030_usb { atomic_t connected; bool vbus_supplied; bool musb_mailbox_pending; + unsigned long runtime_suspended:1; + unsigned long needs_resume:1; struct delayed_work id_workaround_work; }; @@ -384,6 +386,9 @@ static void __twl4030_phy_power(struct twl4030_usb *twl, int on) WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0); } +static int twl4030_usb_runtime_suspend(struct device *dev); +static int twl4030_usb_runtime_resume(struct device *dev); + static int __maybe_unused twl4030_usb_suspend(struct device *dev) { struct twl4030_usb *twl = dev_get_drvdata(dev); @@ -395,6 +400,10 @@ static int __maybe_unused twl4030_usb_suspend(struct device *dev) */ dev_dbg(twl->dev, "%s\n", __func__); disable_irq(twl->irq); + if (!twl->runtime_suspended && !atomic_read(&twl->connected)) { + twl4030_usb_runtime_suspend(dev); + twl->needs_resume = 1; + } return 0; } @@ -405,9 +414,13 @@ static int __maybe_unused twl4030_usb_resume(struct device *dev) dev_dbg(twl->dev, "%s\n", __func__); enable_irq(twl->irq); + if (twl->needs_resume) + twl4030_usb_runtime_resume(dev); /* check whether cable status changed */ twl4030_usb_irq(0, twl); + twl->runtime_suspended = 0; + return 0; } @@ -422,6 +435,8 @@ static int __maybe_unused twl4030_usb_runtime_suspend(struct device *dev) regulator_disable(twl->usb1v8); regulator_disable(twl->usb3v1); + twl->runtime_suspended = 1; + return 0; } -- cgit v1.2.3